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/*
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* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "arc4shim.h"
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#include <cryptospi/cryptosymmetriccipherapi.h>
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#include <cryptospi/cryptospidef.h>
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#include <cryptospi/plugincharacteristics.h>
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#include <cryptostrength.h>
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#include "../common/inlines.h"
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#include <cryptospi/keys.h>
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using namespace CryptoSpi;
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CArc4Shim* CArc4Shim::NewL(const TDesC8& aKey, TUint aDiscardBytes)
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{
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CArc4Shim* self = NewLC(aKey, aDiscardBytes);
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CleanupStack::Pop(self);
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return self;
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}
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CArc4Shim* CArc4Shim::NewLC(const TDesC8& aKey, TUint aDiscardBytes)
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{
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CArc4Shim* self = new (ELeave) CArc4Shim();
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CleanupStack::PushL(self);
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self->ConstructL(aKey, aDiscardBytes);
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TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
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return self;
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}
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void CArc4Shim::ConstructL(const TDesC8& aKey, TUint aDiscardBytes)
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{
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TKeyProperty keyProperty = {KArc4Uid, KNullUid, KSymmetricKey, KNonEmbeddedKeyUid};
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CCryptoParams* keyParam =CCryptoParams::NewLC();
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keyParam->AddL(aKey, KSymmetricKeyParameterUid);
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iKey=CKey::NewL(keyProperty, *keyParam);
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CleanupStack::PopAndDestroy(keyParam);
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iAlgorithmParams = CCryptoParams::NewL();
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iAlgorithmParams->AddL(aDiscardBytes, KARC4DiscardBytes);
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CSymmetricCipherFactory::CreateSymmetricCipherL(
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iSymmetricCipherImpl,
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KArc4Uid,
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*iKey,
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KCryptoModeNoneUid,
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KOperationModeNoneUid,
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KPaddingModeNoneUid,
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iAlgorithmParams);
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}
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CArc4Shim::~CArc4Shim()
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{
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delete iSymmetricCipherImpl;
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delete iKey;
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delete iAlgorithmParams;
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}
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void CArc4Shim::Reset()
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{
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iSymmetricCipherImpl->Reset();
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}
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TInt CArc4Shim::BlockSize() const
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{
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return iSymmetricCipherImpl->BlockSize() >> 3; // Convert to bits
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}
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TInt CArc4Shim::KeySize() const
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{
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return iSymmetricCipherImpl->KeySize();
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}
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void CArc4Shim::Process(const TDesC8& aInput, TDes8& aOutput)
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{
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TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aInput, aOutput);)
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}
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void CArc4Shim::ProcessFinalL(const TDesC8& aInput, TDes8& aOutput)
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{
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iSymmetricCipherImpl->ProcessFinalL(aInput, aOutput);
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}
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TInt CArc4Shim::MaxOutputLength(TInt aInputLength) const
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{
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return iSymmetricCipherImpl->MaxOutputLength(aInputLength);
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}
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TInt CArc4Shim::MaxFinalOutputLength(TInt aInputLength) const
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{
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return iSymmetricCipherImpl->MaxFinalOutputLength(aInputLength);
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}
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CArc4Shim::CArc4Shim()
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{
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}
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